#include <stdio.h>
#include <stdlib.h>

int main()
{
//系统自带的环境变量
  printf("PATH:%s\n",getenv("PATH"));
  printf("PWD:%s\n",getenv("PWD"));
//自定义环境变量
  printf("MYENV:%s\n",getenv("MYENV"));


  printf("i am myotherc.c\n");
  printf("i am myotherc.c\n");
  printf("i am myotherc.c\n");
  printf("i am myotherc.c\n");
  printf("i am myotherc.c\n");
  printf("i am myotherc.c\n");
  return 0;
}
